Believe it or not, I don't think that any of this is font. This piece seems to be created by Dana Tanamachi, an artist and graphic designer who works exclusively in chalk. Don't know if this link will show up, but I found the story about her (along with a picture of the piece) here --> http://online.wsj.com/article/SB10001424052970203458604577265453430025274.html?KEYWORDS=dana+tanamachi#

That you very much for the info!